>>> checkbox with space
1. [ ] one
2. [ ] two
<<<
<ol class="contains-task-list">
<li class="task-list-item"><input type="checkbox"></input>one</li>
<li class="task-list-item"><input type="checkbox"></input>two</li>
</ol>
>>> empty checkbox
1. [] one
2. [] two
<<<
<ol>
<li>[] one</li>
<li>[] two</li>
</ol>
>>> checkbox with x
1. [x] one
2. [x] two
<<<
<ol class="contains-task-list">
<li class="task-list-item"><input type="checkbox" checked="true"></input>one</li>
<li class="task-list-item"><input type="checkbox" checked="true"></input>two</li>
</ol>
>>> checkbox with X
1. [X] one
2. [X] two
<<<
<ol class="contains-task-list">
<li class="task-list-item"><input type="checkbox" checked="true"></input>one</li>
<li class="task-list-item"><input type="checkbox" checked="true"></input>two</li>
</ol>
>>> mixed checkboxes
1. [ ] one
2. [] two
3. [x] three
4. [X] four
5. five
<<<
<ol class="contains-task-list">
<li class="task-list-item"><input type="checkbox"></input>one</li>
<li>[] two</li>
<li class="task-list-item"><input type="checkbox" checked="true"></input>three</li>
<li class="task-list-item"><input type="checkbox" checked="true"></input>four</li>
<li>five</li>
</ol>
>>> mixed leading spaces
1. [ ] zero
2.  [ ] one
3.   [ ] two
4.    [ ] three
5.     [ ] four
<<<
<ol class="contains-task-list">
<li class="task-list-item"><input type="checkbox"></input>zero</li>
<li class="task-list-item"><input type="checkbox"></input>one</li>
<li class="task-list-item"><input type="checkbox"></input>two</li>
<li class="task-list-item"><input type="checkbox"></input>three</li>
<li>
<pre><code>[ ] four
</code></pre>
</li>
</ol>
>>> checkbox with empty content
1. [ ] one
2.
3. 
4. four
5. [ ] five
6.
<<<
<ol class="contains-task-list">
<li class="task-list-item"><input type="checkbox"></input>one</li>
<li></li>
<li></li>
<li>four</li>
<li class="task-list-item"><input type="checkbox"></input>five</li>
<li></li>
</ol>